Improvement in padlocks



vtumblers removed.

UNITED STATES DANIEL T. BRO\VN, OF NEWTOWN, ASSIGNOR TO JAMES H.

l OF NEW YORK, N. Y.

,PATENT @einem IMPROVEMENT IN PADLOCKS.

Specification forming part of Letters Patent No. 47,352, dated April 1S,1865.

To all whom it mag/concern:

Be it known that 1, DANIEL T. BROWN, of Newtown, in the county of Queensand State of New York, have invented, made, and applied to use a certainnew and useful lmprovement in Padlocks; and I do hereby declare thefollowing to be a full, clear, and eX- act description ot' the saidinvention, reference being had to the annexed drawings, making part ofthis specification, wherein- Figure l represents the padlock open andunlocked. Fig. 2 is a similar view with the Fig. 3 is a view of thepadlock in its locked position, the shackle being shown partly' insection and the tumblers removed 5 and Fig. 4 shows the lock completeand in the act of being unlocked.

Similar marks of reference denote the same parts.

The nature of my said invention consists in the combination of aswinging bolt and compound tumbler that when acted upon by the key andspring causes the ejection of the shackle, holds back the bolt, drawsthe stud into the tumblers and holds them in the unlocked position, andwhen thelock is locked by the hasp being t'orcedin, the spring actingagainst this compound tumbler causes the same to project the bolt,release the tnmblers by liberating the holding-stud, and bring thecompound tumbler itself into the position assumed when the bolt islocked.

In the drawings, a represents the case or box of the lock, the cap-platebeing removed. b is the shackle, set on the stud c, and provided with amortise at the moving end, as usual.

This invention is especially adapted to padlocks, but when applied tobox'locks the shape of the caseand hasp will require to be varied,according to the peculiar character of lock.

d is the bolt, moving on the stud eand provided with the talon 1,against which the key acts in throwing the bolt back. 2 is the catchthat enters the mortise in the shackle, and 3 is a stud on thelbolt,forming the center or fulcrum for the compound tumbler f. This compoundtumbler fis formed with an ineline at 4, a notch at 5, (taking the toe 6on the case an) and with the tumbler-stud 7. f

h is the springto the compound tumbler, acting against the projection at8 that is formed on the back portion of the tumbler f.

@1 is a tumbler on the stud 9 and provid( d with the spring l1. k is asecond tumbler cn the same stud 9 and acted upon by the spring 10. Thesetumblers move in opposite directions, as actuated by the keyl that hasdouble bits, as seen in Fig. 4. These tumblers may be increased innumber, if desired, and the length of the talons (at l2) variedaccording to the shape of the key-bits, and in all the tumblers notchesare provided (at 13) to re ceive the stud 7. When the key has placedthese notches all on line with each other and the said stud 7, decoynotches may be made on the edges of the tumblers, not suf'- icientlydeep for receiving the stud 7, and thereby the difficulty ot' pickingthe lock will be increased.

When locked, the parts assume the position shown in Fig. 3, the catchbeing in the mor.

tise of the hasp or shackle, and the incline 4 of the compound tumbleragainst the side of said hasp. On applying the key, the tumblers arefirst turned to their place, so that their notches come opposite to thestud 7. The further movement of the key swings the bolt, drawing thecatch 2out of the mortise in b, and simultaneously throwing the con;-pound tumbler down by thc incline 4, drawing below the end of theshackle as the center of said tumbler on the bolt, moving with the bolt,causes the said tumbler to move bodily sidewise;v This same movementcauses the stud 7 to take into the notches of the tumblers, and alsocompresses the spring h,- hcnce so soon as the end of 2 draws entirelyout from the mortise of the shackle the spring h throws the compoundtumbler f up and ejects the shackle, and the tumbler f is caught by itsnotch `5 taking thoftoc 6, so that the compound tumbler holds the bolt dback and the tumblers in the unlocked position.

When the end of the shackle b is pressed in to lock the lock, it firstdisconnects the.

notch 5 from the toe 6, then the tumbler f is thrown bodily sidewise bythe shackleacting against the incline 4, the spring h aiding in thismovement by allowing the tumbler f to descend until the catch comes tothe mortise bolts as the said tumbler itself moves. The stud MCWILLIAMS,

7 is disconnected by this movement from vthe tumblers i :1nd k, und theyassume, their normal position.

The compound tumbler f has a talon upon V it at 14, by which the key ismade to aid the springin throwing out the shackle, or this uill act inunlocking, without the spring, in case said sp1-in g should break.

The notch 5 nifty be located on the compound tumbler near the stud 7,and take a toe or projection on the other side of the case from thatshown, so that the tumblers and bolt will be held back by them, asbefore set forth.

LEMUEL W. SERRELL, GHAs. H. SMITH.

